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Head-to-head comparison

ContextPilot E4B vs GLM 4.5 Air

ContextPilot E4B (Tencent) and GLM 4.5 Air (Z.ai) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 13 September 2026

As of 13 September 2026, GLM 4.5 Air holds the stronger ModelCap Index position (#103 vs #106); and GLM 4.5 Air ships open weights.

Which should you choose?

Choose ContextPilot E4B if…

  • you want the more recently listed model — ContextPilot E4B was listed 27 August 2026, GLM 4.5 Air 25 July 2025.

Choose GLM 4.5 Air if…

  • you want the stronger overall ModelCap Index position — #103 against #106 (42.0 vs 41.3 points).
  • you want to self-host: GLM 4.5 Air ships open weights while ContextPilot E4B is restricted license.
  • you want provider choice — 3 listed API providers against 0.

ContextPilot E4B vs GLM 4.5 Air: specs, pricing and context

Specification comparison of ContextPilot E4B and GLM 4.5 Air
FieldContextPilot E4BTencentGLM 4.5 AirZ.ai
ModelCap Index position#106#103
Index score41.342.0
EvidenceInheritedMeasured
Input price / 1M tokensUnlisted$0.13
Output price / 1M tokensUnlisted$0.85
Context window— tokens131K tokens
Max output tokens—98K
API providers listed03
Weight accessRestricted licenseOpen weights
Input modalitiesTextText
First listed27 August 202625 July 2025
PublisherTencentZ.ai

Evidence: finetune of google/gemma-4-E4B-it · finetune (100%) · 2 public benchmark observations across 2 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: ContextPilot E4B vs GLM 4.5 Air

Public benchmark boards where ContextPilot E4B or GLM 4.5 Air has a published result
BoardContextPilot E4BGLM 4.5 AirLeads
Arena codingArena (LMArena)—14271419–1435Only one result
AA τ²-Bench TelecomArtificial Analysis—46.5%tau2:telecom:dual-control:pass-at-1:3-repeats:source-model="GLM-4.5-Air":reasoning=trueOnly one result
AA Humanity's Last ExamArtificial Analysis—7.0%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="GLM-4.5-Air":reasoning=trueOnly one result

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

ContextPilot E4B vs GLM 4.5 Air: common questions

Is ContextPilot E4B better than GLM 4.5 Air?

GLM 4.5 Air ranks higher on the ModelCap Index as of 13 September 2026: #103 against #106. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.

Is ContextPilot E4B cheaper than GLM 4.5 Air?

At least one of the two has no listed API price on ModelCap right now, so no price comparison is made.

Which has the bigger context window, ContextPilot E4B or GLM 4.5 Air?

Both publish a —-token context window.

Which is better for coding, ContextPilot E4B or GLM 4.5 Air?

The two models do not share a coding benchmark board on ModelCap yet, so no head-to-head coding score is published; the ModelCap Index position is the closest overall signal.

Are ContextPilot E4B and GLM 4.5 Air open-weight models?

ContextPilot E4B: Restricted license. GLM 4.5 Air: Open weights. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run ContextPilot E4B and GLM 4.5 Air?

ModelCap currently lists 0 API providers for ContextPilot E4B and 3 for GLM 4.5 Air, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this ContextPilot E4B vs GLM 4.5 Air comparison?

Every figure comes from the sealed ModelCap dataset published 13 September 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.

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